9,981 research outputs found
Examples of works to practice staccato technique in clarinet instrument
Klarnetin staccato tekniğini güçlendirme aşamaları eser çalışmalarıyla uygulanmıştır. Staccato
geçişlerini hızlandıracak ritim ve nüans çalışmalarına yer verilmiştir. Çalışmanın en önemli amacı
sadece staccato çalışması değil parmak-dilin eş zamanlı uyumunun hassasiyeti üzerinde de
durulmasıdır. Staccato çalışmalarını daha verimli hale getirmek için eser çalışmasının içinde etüt
çalışmasına da yer verilmiştir. Çalışmaların üzerinde titizlikle durulması staccato çalışmasının ilham
verici etkisi ile müzikal kimliğe yeni bir boyut kazandırmıştır. Sekiz özgün eser çalışmasının her
aşaması anlatılmıştır. Her aşamanın bir sonraki performans ve tekniği güçlendirmesi esas alınmıştır.
Bu çalışmada staccato tekniğinin hangi alanlarda kullanıldığı, nasıl sonuçlar elde edildiği bilgisine
yer verilmiştir. Notaların parmak ve dil uyumu ile nasıl şekilleneceği ve nasıl bir çalışma disiplini
içinde gerçekleşeceği planlanmıştır. Kamış-nota-diyafram-parmak-dil-nüans ve disiplin
kavramlarının staccato tekniğinde ayrılmaz bir bütün olduğu saptanmıştır. Araştırmada literatür
taraması yapılarak staccato ile ilgili çalışmalar taranmıştır. Tarama sonucunda klarnet tekniğin de
kullanılan staccato eser çalışmasının az olduğu tespit edilmiştir. Metot taramasında da etüt
çalışmasının daha çok olduğu saptanmıştır. Böylelikle klarnetin staccato tekniğini hızlandırma ve
güçlendirme çalışmaları sunulmuştur. Staccato etüt çalışmaları yapılırken, araya eser çalışmasının
girmesi beyni rahatlattığı ve istekliliği daha arttırdığı gözlemlenmiştir. Staccato çalışmasını yaparken
doğru bir kamış seçimi üzerinde de durulmuştur. Staccato tekniğini doğru çalışmak için doğru bir
kamışın dil hızını arttırdığı saptanmıştır. Doğru bir kamış seçimi kamıştan rahat ses çıkmasına
bağlıdır. Kamış, dil atma gücünü vermiyorsa daha doğru bir kamış seçiminin yapılması gerekliliği
vurgulanmıştır. Staccato çalışmalarında baştan sona bir eseri yorumlamak zor olabilir. Bu açıdan
çalışma, verilen müzikal nüanslara uymanın, dil atış performansını rahatlattığını ortaya koymuştur.
Gelecek nesillere edinilen bilgi ve birikimlerin aktarılması ve geliştirici olması teşvik edilmiştir.
Çıkacak eserlerin nasıl çözüleceği, staccato tekniğinin nasıl üstesinden gelinebileceği anlatılmıştır.
Staccato tekniğinin daha kısa sürede çözüme kavuşturulması amaç edinilmiştir. Parmakların
yerlerini öğrettiğimiz kadar belleğimize de çalışmaların kaydedilmesi önemlidir. Gösterilen azmin ve
sabrın sonucu olarak ortaya çıkan yapıt başarıyı daha da yukarı seviyelere çıkaracaktır
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Co-design As Healing: Exploring The Experiences Of Participants Facing Mental Health Problems
This thesis is an exploration of the healing role of co-design in mental health. Although co-design projects conducted within mental health settings are rising, existing literature tends to focus on the object of design and its outcomes while the experiences of participants per se remain largely unexplored. The guiding research question of this study is not how we design things that improve mental health, but how co-designing, as an act, might do so.
The thesis presents two projects that were organized in collaboration with the mental health charity Islington Mind and the Psychosis Therapy Project (PTP) in London.
The project at Islington Mind used a structured design process inviting participants to design for wellbeing. A case study analysis provides insights on how participants were impacted, summarizing key challenges and opportunities.
The design at PTP worked towards creating a collective brief in an emergent fashion, finally culminating in a board game. The experiences of participants were explored through Interpretative Phenomenological Analysis (IPA), using semi-structured interview data. The analysis served to identify key themes characterising the experience of co-design such as contributing, connecting, thinking and intentioning. In addition, a mixed-methods analysis of questionnaires and interview data exploring participants' wellbeing, showed that all participants who engaged fairly consistently in the project improved after the project ended, although some participants' scores returned to baseline six months later.
Reflecting on both projects, an approach to facilitation within mental health is outlined, detailing how the dimensions of weaving and layered participation, nurturing mattering and facilitating attitudes interlace. This contribution raises awareness of tacit dimensions in the practice of facilitation, articulating the nuances of how to encourage and sustain meaningful and ethical engagement and offering insights into a range of tools. It highlights the importance of remaining reflexive in relation to attitudes and emotions and discusses practical methodological and ethical challenges and ways to resolve them which can be of benefit to researchers embarking on a similar journey.
The thesis also offers detailed insights on how methodologies from different fields were integrated into a whole, arguing for transparency and reflexivity about epistemological assumptions, and how underlying paradigms shift in an interdisciplinary context.
Based on the overall findings, the thesis makes a case for considering design as healing (or a designerly way of healing), highlighting implications at a systems, social and individual level. It makes an original contribution to our understanding of design, highlighting its healing character, and proposes a new way to support mental health. The participants in this study not only had increased their own wellbeing through co-designing, but were also empowered and contributed towards healing the world. Hence, the thesis argues for a unique, holistic perspective of design and mental health, recognizing the interconnectedness of the individual, social and systemic dimensions of the healing processes that are ignited
Innovative Hybrid Approaches for Vehicle Routing Problems
This thesis deals with the efficient resolution of Vehicle Routing Problems (VRPs).
The first chapter faces the archetype of all VRPs: the Capacitated Vehicle Routing Problem (CVRP). Despite having being introduced more than 60 years ago, it still remains an extremely challenging problem. In this chapter I design a Fast Iterated-Local-Search Localized Optimization algorithm for the CVRP, shortened to FILO. The simplicity of the CVRP definition allowed me to experiment with advanced local search acceleration and pruning techniques that have eventually became the core optimization engine of FILO. FILO experimentally shown to be extremely scalable and able to solve very large scale instances of the CVRP in a fraction of the computing time compared to existing state-of-the-art methods, still obtaining competitive solutions in terms of their quality.
The second chapter deals with an extension of the CVRP called the Extended Single Truck and Trailer Vehicle Routing Problem, or simply XSTTRP. The XSTTRP models a broad class of VRPs in which a single vehicle, composed of a truck and a detachable trailer, has to serve a set of customers with accessibility constraints making some of them not reachable by using the entire vehicle. This problem moves towards VRPs including more realistic constraints and it models scenarios such as parcel deliveries in crowded city centers or rural areas, where maneuvering a large vehicle is forbidden or dangerous. The XSTTRP generalizes several well known VRPs such as the Multiple Depot VRP and the Location Routing Problem. For its solution I developed an hybrid metaheuristic which combines a fast heuristic optimization with a polishing phase based on the resolution of a limited set partitioning problem. Finally, the thesis includes a final chapter aimed at guiding the computational evaluation of new approaches to VRPs proposed by the machine learning community
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After Creation: Intergovernmental Organizations and Member State Governments as Co-Participants in an Authority Relationship
This is a re-amalgamation of what started as one manuscript and became two when the length proved to be more than any publisher wanted to consider. The splitting consisted of removing what are now Parts 3, 4, and 5 so that the manuscript focused on the outcome-related shared beliefs holding an authority relationship together. Those parts were last worked on in 2018. The rest were last worked on in late 2021 but also remain incomplete.
The relational approach adopted in this study treats intergovernmental organizations and the governments of member states as co-participants in an authority relationship with the governments of their member states. Authority relationships link two types of actor, defined by their authority-holder or addressee role in the relationship, through a set of shared beliefs about why the relationship exists and how the participants should fulfill their respective roles. The IGO as authority holder has a role that includes a right to instruct other actors about what they should or should not do; the governments of member states as addressees are expected to comply with the instructions. Three sets of shared beliefs provide the conceptual “glue” holding the relationship together. The first defines the goal of the collective effort, providing both the rationale for having the authority relationship and providing a lode star for assessments of the collective effort’s success or lack of success. The second set defines the shared understanding about allocation of roles and the process of interaction by establishing shared expectations about a) the selection process by which particular actors acquire authority holder roles, b) the definitions identifying one or more categories of addressees expected to follow instructions, and c) the procedures through which the authority holder issues instructions. The third set focus on the outcomes of cooperation through the relationship by defining a) the substantive areas in which the authority holder may issue instructions, b) the bases for assessing the relevance actions mandated in instructions for reaching the goal, and c) the relative efficacy of action paths chosen for reaching the goal as compared to other possible action paths.
Using an authority relationship framework for analyzing cooperation through IGOs highlights the inherently bi-directional nature of IGO-member government activity by viewing their interaction as involving a three-step process in which the IGO as authority holder decides when to issue what instruction, the member state governments as followers react to the instruction with anything from prompt and full compliance through various forms of pushback to outright rejection, and the IGO as authority holder responds to how the followers react with efforts to increase individual compliance with instructions and reinforce continuing acceptance of the authority relationship. Foregrounding the dynamics produced by the interaction of these two streams of perception and action reveals more clearly how far intergovernmental organizations acquire capacity to operate as independent actors, the dynamic ways they maintain that capacity, and how much they influence member governments’ beliefs and actions at different times. The approach fosters better understanding of why, when, and for how long governments choose cooperation through an IGO even in periods of rising unilateralism
A Comprehensive Empirical Investigation on Failure Clustering in Parallel Debugging
The clustering technique has attracted a lot of attention as a promising
strategy for parallel debugging in multi-fault scenarios, this heuristic
approach (i.e., failure indexing or fault isolation) enables developers to
perform multiple debugging tasks simultaneously through dividing failed test
cases into several disjoint groups. When using statement ranking representation
to model failures for better clustering, several factors influence clustering
effectiveness, including the risk evaluation formula (REF), the number of
faults (NOF), the fault type (FT), and the number of successful test cases
paired with one individual failed test case (NSP1F). In this paper, we present
the first comprehensive empirical study of how these four factors influence
clustering effectiveness. We conduct extensive controlled experiments on 1060
faulty versions of 228 simulated faults and 141 real faults, and the results
reveal that: 1) GP19 is highly competitive across all REFs, 2) clustering
effectiveness decreases as NOF increases, 3) higher clustering effectiveness is
easier to achieve when a program contains only predicate faults, and 4)
clustering effectiveness remains when the scale of NSP1F is reduced to 20%
Unified equation of state for neutron stars based on the Gogny interaction
t: The effective Gogny interactions of the D1 family were established by D. Gogny more than forty years ago with the aim to describe simultaneously the mean field and the pairing field corresponding to the nuclear interaction. The most popular Gogny parametrizations, namely D1S, D1N and D1M, describe accurately the ground-state properties of spherical and deformed finite nuclei all across the mass table obtained with Hartree-Fock-Bogoliubov (HFB) calculations. However, these forces produce a rather soft equation of state (EoS) in neutron matter, which leads to predict maximum masses of neutron stars well below the observed value of two solar masses. To remove this limitation, we built new Gogny parametrizations by modifying the density dependence of the symmetry energy predicted by the force in such a way that they can be applied to the neutron star domain and can also reproduce the properties of finite nuclei as good as their predecessors. These new parametrizations allow us to obtain stiffer EoS's based on the Gogny interactions, which predict maximum masses of neutron stars around two solar masses. Moreover, other global properties of the star, such as the moment of inertia and the tidal deformability, are in harmony with those obtained with other well tested EoSs based on the SLy4 Skyrme force or the Barcelona-Catania-Paris-Madrid (BCPM) energy density functional. Properties of the core-crust transition predicted by these Gogny EoSs are also analyzed. Using these new Gogny forces, the EoS in the inner crust is obtained with the Wigner-Seitz approximation in the Variational Wigner-Kirkwood approach along with the Strutinsky integral method, which allows one to estimate in a perturbative way the proton shell and pairing corrections. For the outer crust, the EoS is determined basically by the nuclear masses, which are taken from the experiments, wherever they are available, or by HFB calculations performed with these new forces if the experimental masses are not known
Developing automated meta-research approaches in the preclinical Alzheimer's disease literature
Alzheimer’s disease is a devastating neurodegenerative disorder for which there is no cure. A crucial part of the drug development pipeline involves testing therapeutic interventions in animal disease models. However, promising findings in preclinical experiments have not translated into clinical trial success. Reproducibility has often been cited as a major issue affecting biomedical research, where experimental results in one laboratory cannot be replicated in another. By using meta-research (research on research) approaches such as systematic reviews, researchers aim to identify and summarise all available evidence relating to a specific research question. By conducting a meta-analysis, researchers can also combine the results from different experiments statistically to understand the overall effect of an intervention and to explore reasons for variations seen across different publications. Systematic reviews of the preclinical Alzheimer’s disease literature could inform decision making, encourage research improvement, and identify gaps in the literature to guide future research. However, due to the vast amount of potentially useful evidence from animal models of Alzheimer’s disease, it remains difficult to make sense of and utilise this data effectively. Systematic reviews are common practice within evidence based medicine, yet their application to preclinical research is often limited by the time and resources required. In this thesis, I develop, build-upon, and implement automated meta-research approaches to collect, curate, and evaluate the preclinical Alzheimer’s literature. I searched several biomedical databases to obtain all research relevant to Alzheimer’s disease. I developed a novel deduplication tool to automatically identify and remove duplicate publications identified across different databases with minimal human effort. I trained a crowd of reviewers to annotate a subset of the publications identified and used this data to train a machine learning algorithm to screen through the remaining publications for relevance. I developed text-mining tools to extract model, intervention, and treatment information from publications and I improved existing automated tools to extract reported measures to reduce the risk of bias. Using these tools, I created a categorised database of research in transgenic Alzheimer’s disease animal models and created a visual summary of this dataset on an interactive, openly accessible online platform. Using the techniques described, I also identified relevant publications within the categorised dataset to perform systematic reviews of two key outcomes of interest in transgenic Alzheimer’s disease models: (1) synaptic plasticity and transmission in hippocampal slices and (2) motor activity in the open field test.
Over 400,000 publications were identified across biomedical research databases, with 230,203 unique publications. In a performance evaluation across different preclinical datasets, the automated deduplication tool I developed could identify over 97% of duplicate citations and a had an error rate similar to that of human performance. When evaluated on a test set of publications, the machine learning classifier trained to identify relevant research in transgenic models performed was highly sensitive (captured 96.5% of relevant publications) and excluded 87.8% of irrelevant publications. Tools to identify the model(s) and outcome measure(s) within the full-text of publications may reduce the burden on reviewers and were found to be more sensitive than searching only the title and abstract of citations. Automated tools to assess risk of bias reporting were highly sensitive and could have the potential to monitor research improvement over time. The final dataset of categorised Alzheimer’s disease research contained 22,375 publications which were then visualised in the interactive web application. Within the application, users can see how many publications report measures to reduce the risk of bias and how many have been classified as using each transgenic model, testing each intervention, and measuring each outcome. Users can also filter to obtain curated lists of relevant research, allowing them to perform systematic reviews at an accelerated pace with reduced effort required to search across databases, and a reduced number of publications to screen for relevance. Both systematic reviews and meta-analyses highlighted failures to report key methodological information within publications. Poor transparency of reporting limited the statistical power I had to understand the sources of between-study variation. However, some variables were found to explain a significant proportion of the heterogeneity. Transgenic animal model had a significant impact on results in both reviews. For certain open field test outcomes, wall colour of the open field arena and the reporting of measures to reduce the risk of bias were found to impact results. For in vitro electrophysiology experiments measuring synaptic plasticity, several electrophysiology parameters, including magnesium concentration of the recording solution, were found to explain a significant proportion of the heterogeneity. Automated meta-research approaches and curated web platforms summarising preclinical research could have the potential to accelerate the conduct of systematic reviews and maximise the potential of existing evidence to inform translation
The Angel of Art Sees the Future Even as She Flies Backwards: Enabling Deep Relational Encounter Through Participatory Practice-Based Research.
This research addresses the current lack of opportunity within interdisciplinary arts practices for deep one-to-one relational encounters between creative practitioners operating in applied arts, performance, and workshop contexts with participant-subjects. This artistic problem is situated within the wider culture of pervasive social media, which continues to shape our interactions into forms that are characteristically faster, shorter, and more fragmented than ever before. Such dispersal of our attention is also accelerating our inability to deeply focus or relate for any real length of time. These modes of engaging within our technologically permeated, cosmopolitan and global society is escalating relational problems. Coupled with a constant bombardment of unrealistic visual images, mental health difficulties are also consequently rising, cultivating further issues such as identity ‘splitting’, (Lopez-Fernandez, 2019). In the context of the arts, this thesis proposes that such relational lack cannot be solved by one singular art form, one media modality, one existing engagement approach, or within a short participatory timeframe.
Key to the originality of my thesis is the deliberate embodiment of a maternal experience. Feminist Lise Haller-Ross’ proposes that there is a ‘mother shaped hole in the art world’ and that, ‘as with the essence of the doughnut – we don’t need another hole for the doughnut, we need a whole new recipe’ (conference address, 2015). Indeed, her assertion encapsulates a need for different types of artistic and relational ingredients to be found. I propose these can be discovered within particular forms of maternal love; nurture; caring, and through conceptual relational states of courtship; intercourse; gestation, and birth. Furthermore, my maternal emphasis builds on: feminist, artist, and psychotherapist Bracha Ettinger’s (2006; 2015) notions of maternal, cohabitation and carrying; architect and phenomenologist Juhani Pallasmaa’s (2012) views on sensing and feeling; child psychoanalyst Donald Winnicott’s (1971) thoughts on transitional phenomena and perceptions of holding. Such psychotherapeutic and phenomenological theories are imbricated in-action within my multimodal arts processes. Additionally, by deliberately not privileging the ocular, I engage all my project participants senses and distil their multimodal data through an extended form of somatic and artistic Interpretive Phenomenological Analysis (IPA), (Smith, Flowers, and Larkin, 2009). IPA usefully focuses on the importance of the thematic and idiographic in terms of new knowledge generation, with an analytical focus on lived experience. Indeed, whilst the specifics of the participants in my minor and major projects are unique, my research activates and makes valid, findings that are collectively beneficial to the disciplines of applied and interdisciplinary arts; the field of practice-based research, and beyond.
My original contribution to new knowledge as argued by this thesis, comprises both this text exposition and my practice. This sees the final generation of a new multimodal arts Participatory Practice-Based Framework (PartPb). Through this framework, the researcher-practitioner is seen to adopt a maternal role to gently guide project participants through four phases of co-created multimodal artwork generation. The four participatory ‘Phases’ are: Phase 1: Courtship – Digital Dialogues; Phase 2: Intercourse – Performative Encounters; Phase 3: Gestation – Screen Narratives; Phase 4: Birth – Relational Artworks. The framework also contains six researcher-only ‘Stages’: Stage 1: Participant Selection; Stage 2: Checking Distilled Themes; Stage 3: Location and Object Planning; Stage 4: Noticing, Logging, Sourcing; Stage 5: Collaboration and Construction; Stage 6: Releasing, Gifting, Recruiting. This new PartPb framework, is realised within a series of five practice-based (Pb) artworks called, ‘Minor Projects 1-5’, (2015-16) and Final Major Project, ‘Transformational Encounters: Touch, Traction, Transform’ (TETTT), (2018). These projects are likewise shaped through action-research processes of iterative testing, as developed from Candy and Edmonds (2010) Practice-based Research (PbR) trajectory. In my new PartPb framework, Candy, and Edmonds’ PbR processes are originally combined with a form of Fritz and Laura Perl’s Gestalt Experience Cycle (1947). This innovative fusion I come to term as a form of ‘Feeling Architecture,’ which is procedurally proven to hold and carry both researcher and participants alike, safely, ethically, and creatively through all Phases and Stages of artefact generation. Specifically, my new multimodal PartPb framework offers new knowledge to the field of Practice-Based Research (PbR) and practitioners working in multimodal arts and applied performance contexts. Due to its participatory focus, I develop on the term Practice-Based Research, (Candy and Edmonds, 2010) to coin the term Participatory Practice-Based Research, (PartPbR).
The unique combination of multimodal arts and social-psychological methodologies underpinning my framework also has the potential to contribute to broader Arts, Well-Being, and Creative Health agendas, such as the UK government’s Social Prescribing and Arts and Health initiatives. My original framework offers future researchers’ opportunities to further develop, enhance and enrich individual and community well-being through its application to their own projects, and, in doing so, also starts to challenge unhelpful art binaries that still position community arts practices as somehow lesser to higher art disciplines
Constructing and classifying five-dimensional black holes using integrability
In this thesis we look at the problem of nding and classifying stationary and biaxisymmetric solutions in
ve-dimensional theories of gravity, using particular hidden symmetries. We consider three theories: the
electrostatic sector of Einstein-Maxwell, vacuum gravity and minimal supergravity (Einstein-Maxwell
gravity with a Chern-Simons term).
For electrostatic solutions to Einstein-Maxwell theory, the equations on the metric and Maxwell eld
possess a SL(2;R) symmetry. This allows one to derive transformations which either charge a solution
or immerse it in an electric Melvin background. By considering a neutral static black lens seed and
performing these two transformations with appropriately tuned transformation parameters, we construct
the rst example of a regular black lens in Einstein Maxwell theory with topologically trivial asymptotics.
For vacuum gravity we consider asymptotically
at solutions. The vacuum Einstein equations are
integrable in the sense that they can be reformulated as the integrability condition for an auxiliary
linear system of PDEs. Taking these PDEs, one can integrate them over the event horizons, the axes
of symmetry and in nity. By carefully considering continuity conditions between these solutions, one
may actually solve for metric data on the horizons and the axes in terms of some geometrically de ned
moduli, subject to a set of polynomial constraints. This represents a very useful tool for answering the
existence problem, reducing it to the much more tractable question of whether a particular system of
polynomials (subject to some inequalities) has any solutions. Using this polynomial system we provide a
constructive uniqueness proof for the Kerr (using analogous four-dimensional results), Myers-Perry and
black ring solutions. We also prove, through a combination of analytic and numerical methods, that
the \simplest" L(n; 1) black lens cannot exist by showing that it must possess a conical singularity on
one of the axes.
Finally we consider the case of asymptotically
at solutions in minimal supergravity. As with the
vacuum, this is an integrable theory and so a similar analysis can be performed with exactly analogous
results, although with rather more complicated polynomial systems determining the existence of solutions.
A notable feature of minimal supergravity, not present in the vacuum theory, is the existence of
regular solitons - in this context these are non-trivial solutions without black hole regions. We begin
the exploration of the moduli space of these solitons by rst studying the case of
at space
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